Stenciling machine



Oct. is, 1923.

c. w. DIBBLE ET AL sTENcILING MACHINE hence was more or less costly Work.

Patented oci. 1e, 1923.

UNITED. STATES PATENT OFFICE.

CARL WALLACE DIBBLE AND MARION 'PHILLIPSF IIPORTLAND, OREGON, ASSIGNORS OF ONE-FIFTH TO J. T. LOOFBOUROW, ONE-FIFTH-TO J. G. MEEKS, AND ONE-FIFTH T0 E. D. HOWE.

s'rENcILING MACHINE.

Application filed July 21, 1921. Serial No. 486,646.

To all whom,- Qft may cmicewi:

Be it known that We, CARL "WALLACE DIB- IsLE and MARION PHILLiPs, citizens of the United States, and residents of the city of Portland, county of Multnomah, and State of Oregon, have invented a certain new and useful Improvement in Stenciling Machines, of Which the followingis a specification.

Our invention Irelates to the art of stencil- A ing a design in 'one or more colors on a flat surface. Heretofore this Work Was done by hand and required a skilled operator, and This was true even When Working with a single color, because the inexperienced or careless operator might inadvertently lift part 1of the stencil from the surface being stencilled and so cause a ragged edge in the applied color.L Furthermore, `Athe color is applied thru the stencil by means of a squeegee and if this is pressed with too much force on the surface too litt-le color is applied thru the).

stencil, and on the other hand, if the pres sure of the squeegee is too light, too much color is applied, either of which effects hasa tendency to spoil the design. Furthermore. if a number oi' the saineposters are to be produced it 'isesscntial.thatrthere be uniformity in the artistic finish which is almost impossible if the work is done by hand,

Mexcept by -a skilled operator, permitted to take all the time required for assuring uniform excellence in the results.

' Therefore the object of our invention is t-c provide a dependable machine which will do the work described uniformly Well, and

with dispatch, thus. assuring artistic results, and reducing" .the cost of labor and time re- Furthermore, hand Work is limited as to size of the sign or poster which can be stencilled, While withv the use of a machine the latter can be .adapted to any` size. n

We attain our object bya machine provided With means for holding the stencil in place over the surface on Which the colors, one or more, are to be applied, and with means for mechanically applying or draw-- ing the squeegee across the stencil, Afirst in one direction, then in the reverse direction, said means being "adapted to lift the squeegee offthe stencil at the end of each stroke in one direction and then replacing the squcegee for making the return stroke;

thus causing the squeegee to jump over that section of the stencil carrying a batch of the paint to be applied, in order to spread the paint first in one direction and then in the' and as indicated by the arrows in Figs. 1

and 2. so as to be rescated on the stencil on the opposite side of the batch of paint for drawing the squeegee back across the stencil, in the direction from left to right;

Fig. 2 is a: cross section, more or less diagrammatic, illustrating in part structural details, and the operation of our device;

Fig. 3 is a smaller scaled end view of our machine illustrating how the frame holding the stencil may be lifted oil' the base to remove the card board or material Which 'has been stencilled, and put other material in its place; and

`Figs. 4 and 5 are details of the means provided for guiding the placing of the card board or other material to be stencilled with respect to the stencil, and of means for fastening the stencil in the upper movable frame of our machine.

The base a may be mounted on cleats as b. On the base a is mounted a rectangular frame c by toggle arms d and d', adapted, as apparent,'to lift said frame when moved in one direction, oil' the base a and to reseat the same again when moved in the reverse direction.

In the frame 0 is secured a-frame member-c also of rectangular vform and .provided witha groove e. In the latter is inserted a stencil clamping frame f, also of rectangular form. The stencil g, is secured in place by placing the same on the stencil securing frame member f, and then inserting the latter in the groove e of the frame member c. The details of construction of these parts are more clearly shown in Fig. 4.

verging arms.j and j On the corners of the frame c are mounted sockets h for adjustably supporting posts i made at their upperends withdiconstituting stops, To provide rigidity the posts i are connectedin pairs b brace rods lc, as more ,clearly shown in Fig. 1. The adjustment of the' posts' z' may be provided for by slotting the socket h so that .the opposite walls `thereoiwmay be drawn together by lthumb screws Ih inserted in the ears ofsaid sockets. Toggle-arms Z and Z arepivoted to the upper ends of the posts z' at each end of the frame, andt-hese toggle-arms are connected by rodsm, m, the ends of which, are pivoted to said toggle arms.

On each of the rods m are mounted ad justable collars n and n', said collars afa j carrying bumper springs, o and o. A bar p is slidablymounted on the rods m, m, andcarries pendent, vertically adjustable v rods g, g', t0 the lower ends of which .is

fastened the squeegee r. The arrangement of the latter parts is such that the pressure with which the squeegee r is held down is regulated by the tension given to the coil spring s onthe rods q, g', the springs being tensioned by the adjustment of the wing nuts t threaded on .the upper` extremities of said rods and g.

The purpose of the described arrangement of our machine is to cause the latten to operate as follows: Assuming that the stencil has been secured in the frame c as mentioned, a batch of paint,` as diagrammaticallyillustrated by vu in Fig. 2, is applied to the stencil, and the bar is slid along on the rods m, m until it strikes the bumper springs carried by the adjustable collars n' and fn', said bumper springs functioning to absorb the shock of the impact of the bar p with thecollars nor n. The further sliding movement of the bar p being thus arrested lby the collar n, 'or n', thebar will thereupon carry the rods m, m with it, and

inso .doing swing the toggle-arms Z and Z in .one direction or the other. The togglethe'arms g arms are provided with `apin v adapted to strike against one or the other of the arms j, j of the posts z' thereby limiting the drop of the rods g, g carrying the squeegee 1'. It will be assumed thatin the first place -and g are positioned as indicated byathe dotted outlines gz'in Fig. 2,

l thus causing the squeegee to bear'on the stencil, on one side ofthe batch of paint u. .The bar 71 will now be moved tol the f left, thereby .carrying thel batch of paint '1 u in front of it over the stencil.

During saidmovement of the bar p it will come. in con-taetvwith the bumper springs y0 of the collars Said rods m, m, at this in-" stance are positioned as shown by the dotted outline' m in Fig;v 2;. but theffurther movement-of the bar p to the left will cause a rotary motion of thel arms Z, Z', lifting the stop pins u from the arm j of the post i, to the arm j of the latter, and in so doing lifting the squeegee r from one side of the batch of paint to the opposite side thereof;

a, the card board or other material on whichJ the design has been stenciled is removed, and another piece is substituted.

In order to facilitate the registration of the card board, or. material, with the stencil we provide depressible guides -w, w which may consist of angular pieces depressible in slot-s wzbf the base, andnormally held in projecting position by springsA for example. Fig. 5) is sufficient to suggest the constructiony of said guides w, w; and it will b'e apparent that their arrangement is such that when the frame c is lifted off the base they'project above the base, and thus provide the abutments a ainst which two sides of the material to Ee imprinted Withthe design may be placed, and when the frame ,c is then lowered on the basethereby clamping the material in placethe guides will be depressed out of the way into the base.

We claim:

l. A stenciling device comprising,'a base, means for stretching a stencil over the base, a squeegee, means for carrying said squeegee over the stencil, and meansk cooperating with said carrying-means adapted to` lao means for stretching a stencil over the base,

a squeegee, means for carrying said squeegee to and fro over'the stencil, and means cooperating with said carrying-means adapted to jump the'squeegee forward over a section of said stencil atV the end gf the movement of said carrying means in either direction. j

A stenciling device comprising, a stencil carrielga squeegee, means for carrying said squeegee over the stencil, and means cooperating with said carrying means adapted to jump the squeegee forward over a section ofsaid stencil at the end of the movement of said carrying means.

4. A stenciling devicefcomprising, a base, stencil' mpunting means on the base, a squeegee, a carrier for the squeegee movable' over the stencil, and means operable to4 move the squeegee in an arcuate path to jump the squeegee over a section of the from and back onto'the stencil thereby to jump the squeegee over a section of the stencil. p

5. A stenciling device comprising, a base, stencil mounting means on the base, a squeege'e, aJ carrier for the squeegee movable over the stencil, meansefor causing the squeegee to bear on thestencil With pressure, means operable to move the squeegee in an arcuate path from and yback onto the stencil thereby stencil. 6. A stenciling device comprising, a base, stencil mounting means on the base, a squee- -gee, a carrier for the squeegee movable over the stencil, means for causing the squeegee to bear on the stencil, With variable pressure2 and means operable to move the squeegee 1n an arcuate path from and back onto the stencil thereby to j `mp the squeegee over a' section of the stencil. i

7. In a stenciling device, a base, stencil mounting means on the base, a squeegee, a carrier for the squeegee movable to and fro over the stencil, and means operable to move the squeegee in an arcuate path from and back onto the Vstencil at the end of each travel of the carrier in one direction, thereby to jump the squeegee over a section of the stencil.

8. A stenciling device comprising, a base,

stencil mounting means on th-e base, a squeegee, a carrlerfor the squeegee movable to and fro over the stencil, means for causing the r squeegee to bear on the stencil, 'With va riable, yielding pressure, and means operable to move the -squeegee in an arcuate path from and back onto the stencil at the end of each travel of the vcarrier in one direction, thereby to jump the squeegee over a section of the stencil.

9. A stenciling device comprising, a sten-- cil carrier, posts mounted on said carrier, toggle arms pivoted to the upper ends of sa1d post for arcuate movement in vertical planes, parallel horizontal rods carried by said toggle-arms, a bar s'lidably mounted on said rods, a squeegee carried by said bar, stops located to limit the sliding `movement of said bar on said .rods in either direction, thereby to cause the further movement of said bar, after abutting 'with said stops, to

rotate said toggle-arms and thus jump the said toggle-arms, a bar slidably mounted on said rods, a squeegee, means for supporting the squeegee from said bar and adapted to cause the latter to bear withj yielding pressure on the stencil, stops located to limit the sliding movement of said bar on said rods in either direction, thereby to cause the further movement of said bar, after abutting with said stops, to rotate said toggle-arms and thus jump the squeegee forward over a section of the stencil.

12. A stenciling device comprising, a stencil carrier, posts mounted on said carrier, toggle-arms pivoted to the upper ends of said post for arcuate movement in vertical planes, parallel horizontal rods carried by said toggle-arms, a bar slidably mounted on .said rods, a squeegee, adjustable means for riable yielding pressure on the stencil, stops located to limit the sliding movement of said bar on said rods in eitherdirection, thereby to cause the further movement of said bar, after abutting with said stops, to rotate said toggle-arms and thus jump the squeegee forward over asection of the stencil.

13. A stenciling device comprising. a stencil carrier, adjustable posts mounted on said carrier, toggle-arms .pivoted to the upper ends of said post for arcuate movement in vertical planes, parallel horizontalrods carried by said toggle arms, a bar slidably mounted on said rods, a squeegee carried by said bar, stopslocated to limit the sliding movement of said bar on said rods in either direction, thereby to cause the further movement of said bar, afterL abutting-With ,said stops, to rotate said toggle-arms and thus jump thesqueegee forward' over a sec` tion of the stencil.

14.v A stenciling device comprlsing, a base,l

a stencil carrier movably connected With the base, posts mounted o n` said carrier, togglearms pivoted to the upper ends of said post for arcuate movement in vertical planes, parallel horizontal rods carried by said toggle-arms, a bar slidably mounted on said rods,a squeegee carried by said bar, stops located to limit .the sliding movement of said bar on said rods Ain either direction, thereby to cause the further move-ment of said bar,

after abutting with said stops, to rotate saidv Ward over a section ofthe stencil.

vr'15. A stenciling device comprising, a base, a stencil carrier movably connected with the base, means for registering ther material to be stencilied With the stenciL-"posts mounted on said carrier, toggle'arms pivoted to the upper ends of said post for arcuate movement in vertical planes,v parallel horizontal rods carried by said toggle-arms, a bar s1i'dl toggle-arms and thus jump the squeegee for-v abl mounted on said rods, a squeegee lcarre by said bar, stops located tol limit the sliding movement of said bar on said rods in either direction, thereby to cause the further movement of said bar, after abutting with saidstops, to rotate said toggle-arms l and thus jump the squeegee forward over a section of the stencil.

CARL WALL/@CE DIBBLE. MARION PinLLIPs.A 

